Bushing-expander.



PATENTED AUG. 18, 1903.

G. STAIGER. BUSHING EXPANDER.

APPLIUATION FILED MAB. 27, 190s.

NO MODEL.

Etf/0. 2.

witnesses.-

' obviate this difficulty numerous styles of bush- GODFREY STAIGER,

Patented August 18, 1903.

PATENT Frlci.

OF TOLEDO, OHIO.

BUSHIN'G-EXPANDERI SPECIFICATION forming part of Letters Patent No.736,647, dated August 18, 1903.

Application filed March Z7, 1903.

To all whom t may concern:

Be it known that LGODFREY STAIGER, a citizen of the United States,residing atToledo, in the county of Lucas and State of Ohio, haveinvented acertain new and useful Bushing-Expander; and I do herebydeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to the letters of reference marked thereon,which form a part of this specification.

My invention relates especially to a machine for expanding the metalbushings commonly used in the bung-holes of barrels, kegs, or otherclosed vessels of the class required to be perfectly air-tight toprevent the leakage or fermentation of the contents thereof.

It -is well known that in the filling of barrels, kegs, and the likewith beer, vinegar, or other liquids great difficulty has beenexperienced in making the bung-holes of such vessels perfectly air-tightafter the bungs have been inserted therein. In the endeavor toings--both single and double-have been devised, all of which are eitherworthless orare so expensive of manufacture as to depreciate theirutility.

The object of my invention is to provide a machine that is cheap ofconstruction and simple of operation whereby theV single metal bushingscommonly used in the bung-holes of barrels, kegs, dac., may be expandedafter they have been driven or screwed therein, and thus make anabsolutely air-tight vessel.

XVhile the essential features of my invention are necessarilysusceptible of modifica,- tion, the preferred embodiment thereof isillustrated in the accompanying drawings, in which Figure l is avertical longitudinal partly central sectional view of my invention,showing the position of the swaging-block when being inserted in abung-hole. Fig. 2 is a vertical longitudinal central sectional viewshowing a portion of the handle and the position of the binding-nut andswaging-block during the swaging operation. Fig. 3 is a verticalcentral. sectional view of a bushing Serial No. 1491810. (No model.)

as it appears before it is expanded. Fig. 4L is a similar view of abushing, showing the same expanded and a bung driven therein; and Fig. 5is a vertical longitudinal view of a portion of the mandrel of myinvention, showing the swaging-block thereof within the longitudinalslot provided for its reception.

Referring to the drawings, a represents the mandrel of my invention,which is preferably made circular in form and slightly smaller indiameter than the opening in the bushing l), which it is desired toexpand. The upper portion of the mandrel a is squared, as shown at a, toadapt it to receive and be turned by the wrench or handle c. Thescrew-threads (l are provided on the mandrel d to receive theinternally-screwthreaded binding-nut c, which has the annular flange orshoulder c provided on its under side to seat within the upper flangedportion of the bushing b, as shown in Fig. 2, and thus hold the mandrelconcentric With the bushing b and prevent the threads d from coming inContact with the inner periphery thereof.

A vertical longitudinal slot f, extending diametrically through themandrel a, is provid'ed near its lower portion to receive and house theswaging -bloek g, which is loosely supported on the pin h and adapted toswing in said slot f. The vertical edges of the swaging-block g when inits normal position, as shown in Fig. 2, are tapered so that the lowerportion of said sivaging-block extends a sufficient distance beyond theedges of the mandrel on each side to adapt it to have a wedge-likeengagement with the lower inner edge of the bushing b, thus causing saidedge to be forced outwardly when said swaging block is held in closeengagement with said bushing and the mandrel is turned. In order toprovide means for tripping or turning the swaging-block g upon itssupporting-pivot 7L to the position shown in Fig. l, and thus enable themandrel to be inserted or withdrawn from the bung-hole of the vessel, Iform the horizontally-disposed longitudinal groove t' on the upper edgeof said swaging-block, near one end of which is pivoted the tripping orreleasing rod 7c, which rod extends to a point above the upper end ofthe said man-5 drel through the obliquely-disposed vertical IOO bore orchannel Z. The swagingblock g is normally retained in the position shownin Fig. 2 by means of the expansion-spring fm, which rests within theenlarged upper portion of the bore l and bears against the cap orthumb-piece n, secured to the top of the rod 7c. I do not confine myselfto the use of the swaging-block g for expanding the bushing b, as I amaware that other means employing either a single or double swagingblockmight be used equally as well, but I prefer the form shown as being thesimplest and cheapest of construction.

While I have shown an ordinary handle c for turning the mandrel a, Ipreferably use a right-and-left ratchet-wrench, as I find that theturning of the mandrel ais thereby made easier.

In the operation of my machine the lower end of the mandrel a isinserted in the bunghole of the vessel, the swaging-block being rsttripped to the position shown in Fig. l to enable it to be passed to theinterior of the vessel, where it is released and returns to its normalposition, as shown in Fig. 2. The nut c is then turned down tightly byhand against the annular-flanged portion or rim of the bushing b and themandrel givenA several turns within the nut c, which remains stationaryin its seat, thereby causing the swaging-block to gradually rise as itturns with the mandrel. The lower inner edge of the bushing is thusexpanded las the swaging-block is turned therein, and any leakage aroundthe same is prevented.

It will be apparent by reference to Fig. 4L that after a bung o has beendriven into a bushing expanded by my machine the liquid within thevessel will cause said bung to swell and tightly engage the expandedportion of the bushing, and thus prevent itsbeing blown out.

Having thus described my invention, what' I claim as new, and desire tosecure by Letters Patent, is-

1. A bushing-expander comprising a turnable mandrel adapted to beinserted in abushing, an elongated slot extended through and providedlongitudinally of said mandrel, a swaging-block pivotally secured withinsaid slot, spring-pressed means engaging with and adapted to trip saidblock, and means for causing said block to be drawn into engagement withand expand said bushing when said mandrel is turned, substantially asdescribed.

2. A bushing-expander comprising a mandrel, a block having projectingtapered swaging edges pivot-ally secured to said mandrel, a rodextending above said mandrel and connected to said block and adaptedwhen moved to cause said block to turn on its pivot and its projectingedges to be drawn Within said mandrel, a bearing member threaded to saidmandrel, and means for turning said mandrel.

3. The combinatio n with a bushing, of amandrel having an elongated slotextending therethrough, a swaging-block pivoted within said slot, a rodconnected to'and adapted to turn said block, a member longitudinallymovable on said mandrel and adapted to bear against the upper side ofsaid bushing, and means for forcing said swaging means toward saidmember and expanding said bushing.

4. A bushing-expander comprising a mandrel having an elongated slottherein, V- shaped swaging means pivoted within said slot and adapted tobe entirely inclosed within or to have its swaging edges projectedbeyond the same, a member longitudinally movable on said mandrel, andmeans for causing said swaging means and member to approach or recedefrom each other.

5. A bushing-expander comprising a man- .drel having an elongated slottherein, a tapered swaging-block pivoted within said slot and having itstapered edges projecting beyond the edges of said mandrel, meansprovided for drawing the projecting edges of said block within saidslot, an adjustable bearing member on said mandrel, and means forcausing said block to approach said bearing member for the purposespecified.

6. A bushing-expander comprising a member adapted to be inserted in abushing and having an elongated slot therein, a swagingblock pivotallysecured within said slot, a nut threaded on said member and providedwith an annular flange to adapt it to seat within the rim of saidbushing and hold said member concentric therewith, and means for causingsaid swaging-block to be forced into and expand the bushing in whichsaid member is inserted.

7 The combinationwithabushing, of amandrel adapted to be looselyinserted therein, a tapered swaging-block carried thereby, means forcausing the tapered edges of said block to be inclosed within or projectbeyond said mandrel, a bearing member adjustably mounted on saidmandrel, and means for causing said block to rotate within said bushingand approach said bearing means.

8'. A bushing-expand er comprising an elongated member adapted tobeloosely inserted in abushing and havinga slot extending through aportion thereof, swaging means secured with said slot, a vertical borecommunicating with said slot and extending to the upper portion of saidmember, a spring-pressed rod in said bore having connection with saidswaging means and adapted to trip the same, a bearing element adjustablymounted above said swaging means, and means for causing said swagingmeans to be turned and approach said bearing member.

9. A bushing-expander comprising a mandrel having an elongated slottherein, a block having projecting swaging edges pivotally mountedwithin said slot, a spring -pressed member connected with and adapt-edto con- .trol the movement of said block, a bearing IOO IIO

736,647 element threaded to said mandrel and oar'ry- In `testrnonywhereof I have hereunto ing an annular flange on its bearing-surfacesigned my nalne t0 this specification in the adapted to seat Within therim of the bushpresence of two subscribing Witnesses.

ing operated upon and hold the mandrel eon- GODFREY STAIGER. 5 centrictherewith, and means for causing Witnesses:

said block to lurn and approach said bearing VILBER A. OWEN,

element, substantially as described. CHAS. W'. OWEN.

